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8/x^2-1-4/x-1=2/x+1

We move all terms to the left:

8/x^2-1-4/x-1-(2/x+1)=0

Domain of the equation: x^2!=0

x^2!=0/

x^2!=√0

x!=0

x∈R

Domain of the equation: x!=0

x∈R

Domain of the equation: x+1)!=0We add all the numbers together, and all the variables

x∈R

8/x^2-4/x-(2/x+1)-2=0

We get rid of parentheses

8/x^2-4/x-2/x-1-2=0

We calculate fractions

We do not support expression: x^3

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